宽频带交流有效值转换器的误差校正

朱武; 刘冰瑶

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DOI:10.3969/j.issn.1006-4729.2017.01.017

Journal of ShangHai University of Electric Power :2017,33(1):77-80

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宽频带交流有效值转换器的误差校正

朱武, 刘冰瑶

(上海电力学院电子与信息工程学院)

Error Correction of Broadband AC RMS Converter

ZHU Wu, LIU Bingyao

(School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

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Received:March 16, 2016

中文摘要: 在对数-反对数运算式的基础上，提出了一种在宽频带范围内对非线性误差进行校正的新方法.该方法利用最小二乘法拟合出以输入电压x和频率f为自变量的多项式以减小测量误差.通过Matlab软件对实验测量结果进行校正.实验表明，在50~3.0×10⁴ Hz的频率范围内，校正准确度可达0.075%.

中文关键词: 有效值转换器误差校正最小二乘法

Abstract:Based on the log and antilog transport equation,a new nonlinear error compensation method within the scope of the wide band is proposed.In order to reduce the measurement error,least-square fitting method is applied.MATLAB simulation result shows that the proposed method is effective and reliable,and the accuracy can reach 0.075% in the frequency range of 50~30 000 Hz.

keywords: RMS converter error calibration method of least squares polynomial

文章编号：20171017 中图分类号： 文献标志码：

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Author Name	Affiliation	E-mail
ZHU Wu	School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China	zjmzwzsy@126.com
LIU Bingyao	School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China

Author Name	Affiliation	E-mail
ZHU Wu	School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China	zjmzwzsy@126.com
LIU Bingyao	School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China

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